PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/07-04:27:50
G01     74.9           32.1               21.6 +/-    1.06      36.3 +/-    1.06  0.030 / 0.030
G07     133.4          36.5                8.5 +/-    0.91      13.1 +/-    0.91  0.030 / 0.030
G11     60.2           38.4                6.4 +/-    1.14       9.5 +/-    1.14  0.120 / 0.220
G13     280.2          39.2                8.5 +/-    1.95      12.5 +/-    1.95  0.100 / 0.220
G15     304.7          15.4                2.8 +/-    1.61       6.9 +/-    1.61  0.040 / 0.050
G17     222.8          64.7                9.9 +/-    0.74      10.9 +/-    0.74  0.050 / 0.060
G19     219.0          39.2                9.4 +/-    1.31      13.8 +/-    1.31  0.030 / 0.030
G28     350.4          61.5                6.0 +/-    0.49       6.8 +/-    0.49  0.040 / 0.040
G30     127.8          71.7                8.8 +/-    0.74       9.2 +/-    0.74  0.050 / 0.080