PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-03:57:20
G02     203.9          38.2                4.9 +/-    2.00       7.3 +/-    2.00  0.050 / 0.120
G06     165.7          69.3                4.5 +/-    1.02       4.8 +/-    1.02  0.110 / 0.110
G12     308.2          15.8               -0.2 +/-    2.53      -0.4 +/-    2.53  0.130 / 0.400
G17     40.6           45.0                1.7 +/-    0.70       2.3 +/-    0.70  0.120 / 0.410
G19     4.6            64.1                2.5 +/-    0.49       2.7 +/-    0.49  0.050 / 0.090
G24     291.4          41.4                2.5 +/-    1.84       3.5 +/-    1.84  0.050 / 0.070
G28     103.7          31.9                4.1 +/-    0.54       7.0 +/-    0.54  0.030 / 0.040