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                6.3 +/-    1.17      12.7 +/-    1.17  0.090 / 0.150
G07     102.5          59.4                7.2 +/-    1.13       8.2 +/-    1.13  0.080 / 0.160
G08     41.9           20.9                3.6 +/-    3.36       7.8 +/-    3.36  0.030 / 0.030
G09     172.5          12.8                4.7 +/-    4.27      12.2 +/-    4.27  0.030 / 0.030
G11     91.4           42.3                6.5 +/-    0.77       9.1 +/-    0.77  0.040 / 0.040
G13     311.9          26.9                5.3 +/-    2.24      10.0 +/-    2.24  0.030 / 0.040
G17     203.6          36.7                5.6 +/-    1.11       8.7 +/-    1.11  0.100 / 0.170
G18     81.7           23.3                5.3 +/-    3.18      10.8 +/-    3.18  0.060 / 0.170
G28     308.6          59.8                4.1 +/-    1.02       4.7 +/-    1.02  0.090 / 0.160
G30     3.3            75.4                5.7 +/-    0.73       5.8 +/-    0.73  0.090 / 0.140