PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-03:12:30
G02     33.4           55.4                6.7 +/-    1.07       8.0 +/-    1.07  0.030 / 0.010
G05     138.3          61.4                8.4 +/-    0.92       9.4 +/-    0.92  0.030 / 0.010
G06     53.0           17.2                4.7 +/-    2.59      11.1 +/-    2.59  0.040 / 0.010
G12     202.6          69.8                7.6 +/-    0.39       8.0 +/-    0.39  0.030 / 0.010
G19     98.6           11.4                5.3 +/-    1.90      14.2 +/-    1.90  0.160 / 0.090
G25     300.1          51.6                7.7 +/-    1.25       9.5 +/-    1.25  0.180 / 0.240
G29     306.1          26.5                7.7 +/-    0.94      14.6 +/-    0.94  0.040 / 0.020