PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-14:27:50
G01     46.6           22.7                4.4 +/-    0.97       9.1 +/-    0.97  0.060 / 0.090
G06     175.1          31.4                9.4 +/-    1.66      16.0 +/-    1.66  0.050 / 0.080
G11     43.6           10.3                4.5 +/-    2.06      12.4 +/-    2.06  0.140 / 0.220
G13     245.5          27.8                7.0 +/-    1.73      12.9 +/-    1.73  0.120 / 0.240
G15     282.7          14.0                6.2 +/-    1.35      15.9 +/-    1.35  0.060 / 0.140
G17     341.2          76.4                6.6 +/-    0.67       6.8 +/-    0.67  0.060 / 0.140
G19     251.6          60.0                7.7 +/-    0.74       8.8 +/-    0.74  0.040 / 0.080
G24     318.3          13.3                1.0 +/-   19.54       2.5 +/-   19.54  0.040 / 0.070
G28     58.8           51.1                6.2 +/-    0.72       7.7 +/-    0.72  0.040 / 0.050
G30     152.1          38.2                7.9 +/-    0.64      11.9 +/-    0.64  0.040 / 0.050