PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-22:42:50
G01     57.9           29.8               11.4 +/-    1.96      20.0 +/-    1.96  0.100 / 0.250
G07     143.3          20.7               13.4 +/-    1.81      28.9 +/-    1.81  0.140 / 0.300
G11     48.1           23.7                8.9 +/-    1.48      17.9 +/-    1.48  0.310 / 0.350
G13     260.5          34.3               14.8 +/-    0.94      23.8 +/-    0.94  0.140 / 0.420
G15     291.5          16.6               10.8 +/-    2.70      25.8 +/-    2.70  0.050 / 0.050
G17     258.2          73.8               13.5 +/-    0.61      14.0 +/-    0.61  0.050 / 0.060
G18     41.4           11.9                9.2 +/-    2.39      24.6 +/-    2.39  0.090 / 0.070
G19     235.1          52.1               13.8 +/-    2.42      17.0 +/-    2.42  0.090 / 0.090
G28     40.0           55.7               11.0 +/-    0.62      13.0 +/-    0.62  0.130 / 0.180
G30     144.6          47.8               14.3 +/-    0.76      18.5 +/-    0.76  0.090 / 0.150