PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-14:28:00
G01     121.0          16.5               11.2 +/-    1.65      26.9 +/-    1.65  0.030 / 0.040
G07     74.5           67.6                8.4 +/-    0.83       9.0 +/-    0.83  0.030 / 0.040
G08     45.9           33.4                6.9 +/-    0.51      11.3 +/-    0.51  0.120 / 0.220
G09     176.4          27.1               12.1 +/-    1.20      22.6 +/-    1.20  0.100 / 0.240
G11     109.3          39.1                9.7 +/-    0.91      14.3 +/-    0.91  0.050 / 0.040
G13     318.6          17.8                7.2 +/-    1.97      16.7 +/-    1.97  0.040 / 0.060
G17     201.4          21.8               11.8 +/-    0.97      24.8 +/-    0.97  0.030 / 0.040
G18     96.4           20.0               10.3 +/-    0.75      22.6 +/-    0.75  0.030 / 0.040
G28     288.6          56.4                9.3 +/-    0.67      10.9 +/-    0.67  0.040 / 0.110
G30     342.0          66.4                7.9 +/-    0.41       8.6 +/-    0.41  0.040 / 0.080