PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-07:58:10
G01     233.7          23.9                4.8 +/-    1.51       9.7 +/-    1.51  0.050 / 0.040
G03     305.3          59.9                4.0 +/-    0.97       4.6 +/-    0.97  0.030 / 0.040
G14     76.7           32.0                3.3 +/-    0.64       5.5 +/-    0.64  0.050 / 0.130
G16     151.0          36.9                5.0 +/-    1.30       7.7 +/-    1.30  0.060 / 0.150
G18     209.1          13.7                3.7 +/-    4.31       9.5 +/-    4.31  0.120 / 0.160
G22     246.7          75.6                2.6 +/-    1.21       2.7 +/-    1.21  0.130 / 0.250
G23     300.8          31.7                3.4 +/-    1.18       5.7 +/-    1.18  0.050 / 0.060
G26     110.5          50.8                5.4 +/-    0.61       6.7 +/-    0.61  0.040 / 0.060
G31     42.8           38.5                1.4 +/-    0.57       2.1 +/-    0.57  0.070 / 0.130
G32     92.7           10.3                2.4 +/-    2.17       6.8 +/-    2.17  0.060 / 0.090