PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-18:57:50
G01     72.7           33.2               10.5 +/-    0.86      17.2 +/-    0.86  0.100 / 0.320
G07     136.5          32.9               13.8 +/-    1.39      22.8 +/-    1.39  0.070 / 0.250
G11     55.3           32.4                9.9 +/-    1.13      16.5 +/-    1.13  0.050 / 0.080
G13     276.6          37.7               13.7 +/-    2.22      20.7 +/-    2.22  0.070 / 0.110
G15     304.6          14.6                9.0 +/-    3.19      22.6 +/-    3.19  0.030 / 0.030
G17     230.0          64.8               15.1 +/-    0.92      16.5 +/-    0.92  0.030 / 0.030
G18     50.5           19.2               11.2 +/-    2.04      25.1 +/-    2.04  0.040 / 0.080
G19     223.0          38.9               15.3 +/-    2.34      22.6 +/-    2.34  0.060 / 0.080
G28     17.1           59.6               12.4 +/-    0.67      14.1 +/-    0.67  0.160 / 0.210
G30     133.7          62.8               13.9 +/-    0.39      15.4 +/-    0.39  0.120 / 0.200