PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-07:58:00
G02     283.4          82.1                3.9 +/-    0.92       3.9 +/-    0.92  0.140 / 0.200
G05     170.5          20.4                5.0 +/-    2.63      11.0 +/-    2.63  0.140 / 0.250
G06     39.4           52.1                3.4 +/-    0.80       4.2 +/-    0.80  0.030 / 0.030
G12     321.1          60.0                3.5 +/-    0.49       4.0 +/-    0.49  0.030 / 0.030
G17     75.7           17.7                3.3 +/-    1.33       7.8 +/-    1.33  0.080 / 0.080
G19     64.0           32.7                3.0 +/-    1.83       5.0 +/-    1.83  0.070 / 0.060
G24     240.4          31.0                5.3 +/-    2.29       9.1 +/-    2.29  0.030 / 0.030
G25     317.0          17.8                3.9 +/-    1.82       9.0 +/-    1.82  0.030 / 0.030