PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-10:58:10
G01     113.0          22.0                5.2 +/-    0.86      10.9 +/-    0.86  0.030 / 0.040
G07     96.1           62.4                5.0 +/-    0.91       5.6 +/-    0.91  0.030 / 0.030
G08     42.3           23.2                2.4 +/-    1.59       4.9 +/-    1.59  0.020 / 0.040
G09     174.1          16.9                4.9 +/-    2.28      11.6 +/-    2.28  0.020 / 0.030
G11     95.5           41.7                5.3 +/-    0.67       7.5 +/-    0.67  0.100 / 0.190
G13     313.8          24.8                2.8 +/-    0.90       5.5 +/-    0.90  0.100 / 0.190
G17     202.7          33.5                4.7 +/-    1.51       7.7 +/-    1.51  0.090 / 0.240
G18     86.3           22.8                3.4 +/-    1.04       7.0 +/-    1.04  0.080 / 0.200
G28     304.9          59.5                3.9 +/-    0.76       4.4 +/-    0.76  0.080 / 0.240
G30     355.0          72.8                4.7 +/-    0.69       4.9 +/-    0.69  0.070 / 0.220