PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-22:28:10
G02     203.7          37.6               16.1 +/-    1.15      24.4 +/-    1.15  0.080 / 0.110
G06     162.7          69.6               13.2 +/-    0.42      14.0 +/-    0.42  0.070 / 0.080
G12     307.5          14.7                8.0 +/-    3.55      19.9 +/-    3.55  0.080 / 0.140
G17     38.5           46.9                9.9 +/-    1.39      13.0 +/-    1.39  0.100 / 0.130
G19     6.4            63.8                9.8 +/-    0.61      10.8 +/-    0.61  0.190 / 0.350
G24     294.1          39.8                5.7 +/-    4.71       8.3 +/-    4.71  0.110 / 0.270
G28     102.3          33.5               12.9 +/-    1.03      21.1 +/-    1.03  0.030 / 0.030