PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-06:12:30
G02     32.8           55.4                3.0 +/-    1.01       3.5 +/-    1.01  0.080 / 0.040
G05     140.2          61.3                5.5 +/-    0.68       6.1 +/-    0.68  0.050 / 0.050
G06     51.3           21.2                1.7 +/-    2.94       3.5 +/-    2.94  0.020 / 0.030
G12     206.2          70.8                5.0 +/-    0.38       5.3 +/-    0.38  0.030 / 0.030
G19     98.6           10.9                4.9 +/-    2.38      13.3 +/-    2.38  0.130 / 0.160
G25     295.4          55.4                2.3 +/-    3.17       2.8 +/-    3.17  0.120 / 0.230
G29     308.5          30.8                4.1 +/-    0.97       7.1 +/-    0.97  0.220 / 0.240