PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-00:12:50
G01     107.5          25.4                7.7 +/-    2.41      15.0 +/-    2.41  0.040 / 0.050
G07     105.9          58.9                7.8 +/-    1.24       9.0 +/-    1.24  0.040 / 0.070
G08     42.3           22.9                5.3 +/-    1.68      11.0 +/-    1.68  0.090 / 0.150
G09     175.7          14.9                7.3 +/-    1.91      18.3 +/-    1.91  0.110 / 0.140
G11     93.5           43.4                9.2 +/-    0.95      12.7 +/-    0.95  0.070 / 0.070
G13     310.5          27.7                5.9 +/-    1.36      10.9 +/-    1.36  0.100 / 0.060
G17     206.3          35.8                8.7 +/-    0.60      13.6 +/-    0.60  0.120 / 0.210
G19     209.0          12.9                7.3 +/-    3.12      19.1 +/-    3.12  0.170 / 0.120
G28     318.4          61.1                5.9 +/-    0.72       6.6 +/-    0.72  0.050 / 0.060
G30     43.6           77.9                7.2 +/-    0.62       7.3 +/-    0.62  0.030 / 0.060