PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-09:43:00
G01     121.9          15.7                4.2 +/-    1.56      10.3 +/-    1.56  0.030 / 0.030
G07     73.3           67.5                5.7 +/-    0.45       6.1 +/-    0.45  0.030 / 0.030
G08     45.7           32.6                3.9 +/-    1.48       6.6 +/-    1.48  0.170 / 0.240
G09     174.2          25.2                5.6 +/-    2.20      10.9 +/-    2.20  0.210 / 0.340
G11     109.3          38.7                6.8 +/-    0.94      10.2 +/-    0.94  0.120 / 0.330
G13     318.9          17.2                3.2 +/-    1.71       7.5 +/-    1.71  0.180 / 0.180
G17     200.4          22.6                4.4 +/-    1.93       9.1 +/-    1.93  0.090 / 0.200
G18     96.2           19.5                4.7 +/-    1.63      10.4 +/-    1.63  0.120 / 0.200
G28     285.6          55.5                4.6 +/-    2.45       5.4 +/-    2.45  0.030 / 0.030
G30     338.6          64.8                5.3 +/-    0.51       5.8 +/-    0.51  0.030 / 0.030