PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-11:43:10
G01     121.1          16.3                4.7 +/-    1.26      11.4 +/-    1.26  0.030 / 0.030
G07     74.6           67.5                4.3 +/-    0.68       4.6 +/-    0.68  0.030 / 0.030
G08     45.3           31.8                3.0 +/-    0.44       5.1 +/-    0.44  0.030 / 0.040
G09     175.6          26.2                5.5 +/-    1.42      10.5 +/-    1.42  0.020 / 0.030
G11     108.2          39.0                6.1 +/-    0.66       9.1 +/-    0.66  0.120 / 0.200
G13     318.6          17.8                0.9 +/-    1.44       2.1 +/-    1.44  0.100 / 0.230
G17     200.6          23.3                3.7 +/-    2.48       7.5 +/-    2.48  0.100 / 0.250
G18     96.0           19.8                4.5 +/-    0.88       9.9 +/-    0.88  0.100 / 0.260
G28     288.0          56.3                4.3 +/-    0.86       5.0 +/-    0.86  0.080 / 0.150
G30     339.8          65.4                2.7 +/-    0.67       3.0 +/-    0.67  0.080 / 0.160