PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-03:27:50
G01     105.8          26.0                6.0 +/-    1.61      11.5 +/-    1.61  0.030 / 0.040
G07     110.2          54.8                4.5 +/-    0.58       5.4 +/-    0.58  0.030 / 0.040
G08     41.4           16.8                2.3 +/-    2.08       5.4 +/-    2.08  0.110 / 0.130
G09     173.4          11.3                5.5 +/-    2.39      14.9 +/-    2.39  0.080 / 0.120
G11     84.8           42.4                3.9 +/-    1.36       5.5 +/-    1.36  0.080 / 0.120
G13     308.4          29.9                3.4 +/-    1.26       6.1 +/-    1.26  0.090 / 0.110
G17     205.1          41.8                5.0 +/-    1.26       7.1 +/-    1.26  0.040 / 0.040
G18     75.2           23.3                3.9 +/-    0.88       7.9 +/-    0.88  0.040 / 0.050
G28     315.6          60.4                2.5 +/-    0.75       2.8 +/-    0.75  0.070 / 0.130
G30     21.9           78.5                2.5 +/-    0.67       2.6 +/-    0.67  0.080 / 0.110