PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-17:43:00
G01     126.0          12.6               13.1 +/-    2.74      34.4 +/-    2.74  0.040 / 0.060
G07     55.8           69.6               11.2 +/-    0.51      11.8 +/-    0.51  0.040 / 0.060
G08     50.7           40.7                9.5 +/-    1.44      13.7 +/-    1.44  0.030 / 0.040
G09     178.1          34.7               12.5 +/-    1.42      19.9 +/-    1.42  0.030 / 0.040
G11     117.9          35.9               12.4 +/-    0.78      19.4 +/-    0.78  0.030 / 0.030
G13     320.8          12.6               10.3 +/-    3.57      27.2 +/-    3.57  0.030 / 0.030
G17     201.2          13.5               10.9 +/-    1.69      28.0 +/-    1.69  0.100 / 0.070
G18     102.9          17.3               11.5 +/-    1.28      27.0 +/-    1.28  0.070 / 0.060
G28     278.8          53.8               10.8 +/-    2.45      13.0 +/-    2.45  0.100 / 0.230
G30     336.0          62.4               10.0 +/-    0.45      11.1 +/-    0.45  0.120 / 0.200