PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-01:12:30
G02     216.6          63.0               12.7 +/-    1.02      14.0 +/-    1.02  0.070 / 0.070
G06     55.2           73.7                9.8 +/-    0.29      10.2 +/-    0.29  0.050 / 0.070
G12     318.8          36.7                9.5 +/-    1.54      14.7 +/-    1.54  0.060 / 0.090
G17     55.8           35.3                8.6 +/-    1.93      13.6 +/-    1.93  0.070 / 0.080
G19     40.1           48.9                8.8 +/-    2.27      11.3 +/-    2.27  0.030 / 0.020
G24     264.1          41.3               10.4 +/-    1.27      14.8 +/-    1.27  0.030 / 0.030
G28     123.6          12.3               11.6 +/-    1.81      30.7 +/-    1.81  0.190 / 0.340