PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-19:12:50
G07     116.8          47.7               13.8 +/-    0.52      18.0 +/-    0.52  0.040 / 0.060
G08     41.5           15.3                9.1 +/-    1.05      22.5 +/-    1.05  0.040 / 0.050
G09     174.5          10.3               17.8 +/-    2.19      49.3 +/-    2.19  0.040 / 0.060
G11     79.8           42.6               13.4 +/-    0.73      18.7 +/-    0.73  0.030 / 0.060
G13     304.7          32.5               10.6 +/-    1.80      17.7 +/-    1.80  0.030 / 0.030
G17     207.3          43.7               16.5 +/-    0.91      22.7 +/-    0.91  0.040 / 0.030
G18     72.3           24.0               11.2 +/-    0.86      22.4 +/-    0.86  0.080 / 0.160
G19     210.0          18.1               16.0 +/-    1.95      36.8 +/-    1.95  0.140 / 0.320
G28     319.1          60.4               11.6 +/-    0.59      13.1 +/-    0.59  0.090 / 0.160
G30     62.2           79.2               11.6 +/-    0.87      11.8 +/-    0.87  0.090 / 0.160