PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-12:58:10
G01     315.4          25.5                3.8 +/-    1.42       7.4 +/-    1.42  0.080 / 0.170
G10     92.6           46.9                3.2 +/-    0.70       4.3 +/-    0.70  0.130 / 0.140
G11     293.4          26.8                4.7 +/-    1.31       8.8 +/-    1.31  0.030 / 0.030
G14     328.2          71.1                3.7 +/-    0.93       3.9 +/-    0.93  0.040 / 0.020
G18     291.8          48.3                6.1 +/-    6.37       7.8 +/-    6.37  0.050 / 0.050
G20     112.6          22.5                6.1 +/-    1.31      12.7 +/-    1.31  0.050 / 0.040
G22     306.0          19.7                1.9 +/-    2.81       4.3 +/-    2.81  0.050 / 0.050
G25     91.6           11.9                7.5 +/-    1.69      20.0 +/-    1.69  0.040 / 0.050
G31     175.9          49.7                5.2 +/-    1.57       6.6 +/-    1.57  0.050 / 0.050
G32     14.4           64.0                3.8 +/-    1.04       4.1 +/-    1.04  0.060 / 0.070