PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-23:27:50
G01     57.9           29.8                9.1 +/-    0.74      15.9 +/-    0.74  0.060 / 0.100
G07     143.3          20.7               11.3 +/-    1.28      24.4 +/-    1.28  0.070 / 0.100
G11     48.3           24.0                7.9 +/-    0.94      15.8 +/-    0.94  0.050 / 0.060
G13     260.6          34.3               10.6 +/-    1.00      17.1 +/-    1.00  0.040 / 0.060
G15     291.4          16.6                8.4 +/-    1.89      20.0 +/-    1.89  0.050 / 0.060
G17     259.5          74.4               10.1 +/-    0.55      10.4 +/-    0.55  0.040 / 0.060
G18     41.4           11.9                8.0 +/-    2.86      21.4 +/-    2.86  0.060 / 0.180
G19     235.1          52.3               11.4 +/-    0.41      13.9 +/-    0.41  0.070 / 0.210
G28     40.1           55.7                8.7 +/-    0.47      10.3 +/-    0.47  0.040 / 0.050
G30     144.5          47.4               12.7 +/-    0.91      16.5 +/-    0.91  0.030 / 0.040