PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-07:27:50
G01     110.3          23.7                5.7 +/-    2.06      11.5 +/-    2.06  0.040 / 0.040
G07     102.5          59.4                6.8 +/-    0.63       7.8 +/-    0.63  0.040 / 0.040
G08     41.9           20.9                2.9 +/-    0.59       6.2 +/-    0.59  0.040 / 0.040
G09     172.5          12.8                4.1 +/-    3.54      10.7 +/-    3.54  0.030 / 0.040
G11     91.4           42.3                7.1 +/-    0.70       9.9 +/-    0.70  0.060 / 0.250
G13     311.9          26.9                4.3 +/-    1.00       8.1 +/-    1.00  0.060 / 0.220
G17     203.6          36.7                6.4 +/-    3.33       9.9 +/-    3.33  0.090 / 0.170
G18     81.7           23.3                4.6 +/-    0.95       9.3 +/-    0.95  0.080 / 0.170
G28     308.6          59.8                5.3 +/-    0.84       6.0 +/-    0.84  0.080 / 0.210
G30     3.3            75.4                5.9 +/-    0.77       6.1 +/-    0.77  0.080 / 0.190