PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-12:27:50
G01     319.7          16.2                2.9 +/-    2.15       7.1 +/-    2.15  0.030 / 0.060
G08     263.6          14.0                5.6 +/-    1.57      14.2 +/-    1.57  0.030 / 0.060
G10     76.3           54.6                3.5 +/-    0.42       4.1 +/-    0.42  0.130 / 0.360
G11     306.7          20.4                3.8 +/-    3.36       8.2 +/-    3.36  0.110 / 0.320
G14     284.2          68.1                4.3 +/-    1.02       4.6 +/-    1.02  0.050 / 0.040
G18     307.0          37.9                3.3 +/-    1.80       5.0 +/-    1.80  0.050 / 0.040
G22     300.5          12.2                5.1 +/-    2.87      13.6 +/-    2.87  0.060 / 0.100
G31     175.2          41.2                8.4 +/-    0.75      12.0 +/-    0.75  0.060 / 0.100
G32     6.7            68.1                4.1 +/-    0.80       4.4 +/-    0.80  0.110 / 0.240