PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-20:43:00
G01     76.7           33.0               10.6 +/-    1.65      17.4 +/-    1.65  0.060 / 0.090
G07     134.0          30.1               12.7 +/-    1.93      22.2 +/-    1.93  0.060 / 0.080
G11     56.5           33.6               10.6 +/-    2.01      17.3 +/-    2.01  0.040 / 0.050
G13     280.6          38.6                8.9 +/-    2.19      13.3 +/-    2.19  0.040 / 0.050
G15     306.4          14.4                6.7 +/-    3.29      17.0 +/-    3.29  0.070 / 0.130
G17     224.1          65.2               13.2 +/-    0.91      14.3 +/-    0.91  0.050 / 0.120
G18     51.4           19.2               10.4 +/-    2.60      23.2 +/-    2.60  0.030 / 0.030
G19     219.8          37.2               12.8 +/-    2.19      19.5 +/-    2.19  0.030 / 0.030
G28     0.9            61.3               10.7 +/-    1.05      12.0 +/-    1.05  0.100 / 0.090
G30     129.3          65.5               13.7 +/-    0.40      14.9 +/-    0.40  0.100 / 0.110