PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-21:28:00
G01     83.8           32.6                9.1 +/-    1.57      15.1 +/-    1.57  0.040 / 0.080
G07     130.1          35.7               12.5 +/-    0.60      19.5 +/-    0.60  0.040 / 0.070
G11     61.6           36.9                9.6 +/-    0.75      14.7 +/-    0.75  0.050 / 0.110
G13     288.0          38.0               12.5 +/-    1.25      18.7 +/-    1.25  0.050 / 0.100
G15     311.2          12.4                7.4 +/-    1.48      19.6 +/-    1.48  0.050 / 0.040
G17     217.6          60.0               11.0 +/-    0.95      12.5 +/-    0.95  0.040 / 0.050
G18     56.3           21.2               10.3 +/-    1.89      22.0 +/-    1.89  0.130 / 0.210
G19     216.5          31.7               11.2 +/-    2.13      19.0 +/-    2.13  0.100 / 0.140
G28     350.1          61.6                8.4 +/-    0.56       9.5 +/-    0.56  0.030 / 0.030
G30     119.2          71.3               11.5 +/-    0.70      12.1 +/-    0.70  0.030 / 0.030