PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-15:12:50
G01     117.9          18.8               13.0 +/-    1.80      29.3 +/-    1.80  0.130 / 0.070
G07     83.9           66.0               11.4 +/-    0.28      12.3 +/-    0.28  0.080 / 0.100
G08     44.5           30.6                9.6 +/-    1.33      16.5 +/-    1.33  0.040 / 0.030
G09     176.1          23.6               11.0 +/-    0.99      22.1 +/-    0.99  0.040 / 0.030
G11     104.8          40.5               11.7 +/-    0.66      16.9 +/-    0.66  0.030 / 0.030
G13     317.0          20.6                8.4 +/-    2.09      18.2 +/-    2.09  0.030 / 0.020
G17     202.3          25.0               10.2 +/-    2.56      19.9 +/-    2.56  0.070 / 0.230
G18     92.7           21.4               12.3 +/-    1.54      26.2 +/-    1.54  0.080 / 0.180
G28     295.3          57.9                8.8 +/-    0.87      10.2 +/-    0.87  0.120 / 0.120
G30     348.6          69.6               11.6 +/-    0.42      12.3 +/-    0.42  0.110 / 0.130