PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/09-04:58:00
G01     55.3           27.8                3.7 +/-    2.34       6.8 +/-    2.34  0.030 / 0.030
G06     178.6          17.2                6.3 +/-    4.40      14.9 +/-    4.40  0.040 / 0.040
G07     143.0          20.2                6.5 +/-    1.33      14.2 +/-    1.33  0.020 / 0.030
G11     48.2           25.8                5.9 +/-    2.72      11.4 +/-    2.72  0.030 / 0.020
G13     257.6          35.3                8.7 +/-    1.15      13.7 +/-    1.15  0.080 / 0.190
G15     288.3          17.3                3.9 +/-    1.02       9.2 +/-    1.02  0.100 / 0.170
G17     271.2          78.9                9.8 +/-    0.41      10.0 +/-    0.41  0.110 / 0.150
G19     234.9          55.6                8.6 +/-    1.75      10.2 +/-    1.75  0.090 / 0.190
G28     24.5           59.9                5.5 +/-    0.69       6.2 +/-    0.69  0.040 / 0.060
G30     146.7          53.9                9.8 +/-    0.31      11.9 +/-    0.31  0.040 / 0.060