PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-18:43:00
G03     188.6          19.8               15.0 +/-    1.90      33.0 +/-    1.90  0.050 / 0.080
G07     288.6          36.2               11.9 +/-    1.62      18.5 +/-    1.62  0.050 / 0.090
G08     146.4          25.3               17.5 +/-    1.57      34.0 +/-    1.57  0.020 / 0.030
G09     320.3          60.3               10.5 +/-    1.66      11.9 +/-    1.66  0.030 / 0.020
G16     43.1           39.7               11.1 +/-    0.98      16.2 +/-    0.98  0.040 / 0.040
G23     114.0          77.5               12.2 +/-    0.41      12.5 +/-    0.41  0.030 / 0.030
G26     43.3           11.6               10.7 +/-    2.13      28.8 +/-    2.13  0.110 / 0.270
G27     100.4          33.2               14.3 +/-    0.85      23.4 +/-    0.85  0.180 / 0.340
G30     273.6          14.0               12.0 +/-    1.00      30.5 +/-    1.00  0.120 / 0.150