PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-00:57:50
G01     40.3           15.0                9.4 +/-    2.77      23.3 +/-    2.77  0.190 / 0.450
G02     198.8          11.5                9.2 +/-   23.98      24.9 +/-   23.98  0.130 / 0.440
G06     175.3          40.7               13.9 +/-    1.13      20.0 +/-    1.13  0.050 / 0.070
G13     236.6          20.7               14.2 +/-    2.50      30.8 +/-    2.50  0.070 / 0.070
G15     268.6          11.7               12.2 +/-    1.17      32.9 +/-    1.17  0.050 / 0.070
G17     357.5          70.6               11.1 +/-    0.48      11.7 +/-    0.48  0.050 / 0.060
G19     283.4          69.8               10.5 +/-    0.75      11.1 +/-    0.75  0.020 / 0.020
G24     316.1          20.4                9.5 +/-    2.56      20.8 +/-    2.56  0.030 / 0.030
G28     74.8           45.4               11.9 +/-    0.70      15.9 +/-    0.70  0.160 / 0.350
G30     154.2          22.9               15.9 +/-    1.56      32.6 +/-    1.56  0.260 / 0.390