PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-14:57:50
G01     107.0          24.7                8.5 +/-    1.29      16.8 +/-    1.29  0.040 / 0.070
G07     108.4          54.3                8.6 +/-    0.35      10.4 +/-    0.35  0.060 / 0.060
G08     42.1           22.6                6.8 +/-    2.35      14.1 +/-    2.35  0.040 / 0.060
G09     175.6          15.7                8.2 +/-    2.05      20.0 +/-    2.05  0.040 / 0.060
G11     89.4           43.4                7.6 +/-    1.06      10.4 +/-    1.06  0.030 / 0.040
G13     309.8          29.1                7.6 +/-    0.75      13.6 +/-    0.75  0.030 / 0.030
G17     205.2          35.0                8.7 +/-    0.74      13.9 +/-    0.74  0.090 / 0.170
G18     80.0           23.9                6.2 +/-    1.28      12.5 +/-    1.28  0.090 / 0.150
G28     305.4          58.3                7.8 +/-    1.01       9.0 +/-    1.01  0.070 / 0.100
G30     32.9           78.2                8.4 +/-    1.04       8.6 +/-    1.04  0.060 / 0.090