PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/24-12:42:50
G01     74.2           33.2                5.7 +/-    0.65       9.3 +/-    0.65  0.040 / 0.050
G07     135.6          33.5                5.5 +/-    1.09       9.0 +/-    1.09  0.060 / 0.060
G11     54.8           31.5                2.6 +/-    0.94       4.4 +/-    0.94  0.040 / 0.070
G13     277.8          38.0                6.0 +/-    1.12       9.0 +/-    1.12  0.060 / 0.100
G15     308.3          12.5                3.5 +/-    1.69       9.3 +/-    1.69  0.030 / 0.030
G17     228.9          68.4                3.8 +/-    1.38       4.1 +/-    1.38  0.040 / 0.040
G18     50.8           19.1                4.5 +/-    1.62      10.2 +/-    1.62  0.060 / 0.100
G19     221.9          35.6                6.6 +/-    2.12      10.3 +/-    2.12  0.070 / 0.090
G28     13.8           60.0                4.9 +/-    1.07       5.6 +/-    1.07  0.100 / 0.210
G30     132.0          66.6                3.0 +/-    1.20       3.2 +/-    1.20  0.090 / 0.220