PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-13:27:50
G01     115.7          20.3                8.8 +/-    1.71      19.2 +/-    1.71  0.040 / 0.030
G07     89.8           64.5                7.3 +/-    0.45       8.0 +/-    0.45  0.030 / 0.030
G08     43.4           27.3                5.8 +/-    1.70      10.7 +/-    1.70  0.130 / 0.150
G09     175.2          20.6                7.4 +/-    2.50      16.0 +/-    2.50  0.120 / 0.140
G11     100.7          41.2                7.9 +/-    0.70      11.3 +/-    0.70  0.040 / 0.070
G13     315.6          22.6                3.5 +/-    1.67       7.2 +/-    1.67  0.040 / 0.070
G17     202.5          28.8                7.0 +/-    1.62      12.6 +/-    1.62  0.040 / 0.080
G18     89.8           22.1                6.8 +/-    1.33      14.1 +/-    1.33  0.040 / 0.070
G28     299.7          58.7                4.9 +/-    0.51       5.7 +/-    0.51  0.030 / 0.040
G30     351.5          71.2                5.8 +/-    0.72       6.1 +/-    0.72  0.030 / 0.040