PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-11:58:10
G01     102.5          27.7                3.1 +/-   36.87       5.8 +/-   36.87  0.020 / 0.050
G07     113.3          54.6                5.8 +/-   37.73       7.0 +/-   37.73  0.020 / 0.020
G08     41.5           14.6                2.5 +/-   34.44       6.4 +/-   34.44  0.040 / 0.040
G11     81.1           42.0                4.6 +/-   38.06       6.4 +/-   38.06  0.030 / 0.040
G13     305.7          31.5                2.2 +/-   34.05       3.8 +/-   34.05  0.050 / 0.110
G17     207.2          44.0                6.2 +/-   37.40       8.4 +/-   37.40  0.070 / 0.090
G18     74.8           24.4                5.0 +/-   34.77      10.0 +/-   34.77  0.070 / 0.150
G19     210.8          13.7                1.5 +/-   35.77       3.8 +/-   35.77  0.130 / 0.150
G28     326.1          61.5                3.4 +/-   35.34       3.8 +/-   35.34  0.070 / 0.130
G30     35.7           79.8                4.3 +/-   35.63       4.3 +/-   35.63  0.080 / 0.120