PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/01-01:42:50
G02     262.8          80.1                7.0 +/-    0.31       7.1 +/-    0.31  0.090 / 0.140
G05     169.2          20.7                9.7 +/-    2.74      21.0 +/-    2.74  0.130 / 0.120
G06     38.7           58.1                6.2 +/-    0.64       7.2 +/-    0.64  0.300 / 0.190
G12     320.6          53.7                5.4 +/-    1.28       6.5 +/-    1.28  0.110 / 0.190
G17     74.9           18.4                5.2 +/-    4.01      11.9 +/-    4.01  0.080 / 0.060
G19     61.2           35.7                7.6 +/-    1.29      11.9 +/-    1.29  0.070 / 0.070
G24     238.7          31.8                7.5 +/-    2.10      12.7 +/-    2.10  0.040 / 0.040
G25     317.1          17.4                5.0 +/-    1.59      11.8 +/-    1.59  0.060 / 0.040