PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-20:43:00
G01     83.7           32.5               10.7 +/-    1.33      17.8 +/-    1.33  0.050 / 0.050
G07     130.2          35.2               13.8 +/-    0.80      21.8 +/-    0.80  0.030 / 0.050
G11     61.7           36.9               11.8 +/-    0.60      18.0 +/-    0.60  0.040 / 0.090
G13     287.9          38.0               15.3 +/-    1.00      22.9 +/-    1.00  0.040 / 0.080
G15     311.1          12.5                8.7 +/-    1.02      23.0 +/-    1.02  0.030 / 0.030
G17     217.6          59.7               13.0 +/-    1.10      14.9 +/-    1.10  0.030 / 0.030
G18     56.5           21.3               10.6 +/-    2.73      22.5 +/-    2.73  0.110 / 0.160
G19     216.4          31.8               14.2 +/-    2.22      23.9 +/-    2.22  0.120 / 0.120
G28     349.7          61.6               11.3 +/-    0.42      12.6 +/-    0.42  0.060 / 0.090
G30     119.5          70.9               14.4 +/-    0.88      15.1 +/-    0.88  0.070 / 0.100