PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-00:28:10
G02     226.4          70.5               12.5 +/-    0.89      13.1 +/-    0.89  0.030 / 0.060
G05     173.6          10.9                0.2 +/-   35.09       0.7 +/-   35.09  0.040 / 0.060
G06     44.2           65.6                9.5 +/-    0.24      10.3 +/-    0.24  0.130 / 0.230
G12     320.9          44.6               10.7 +/-    1.30      14.6 +/-    1.30  0.150 / 0.200
G17     62.7           30.3               10.3 +/-    0.72      17.9 +/-    0.72  0.080 / 0.100
G19     48.7           44.1               10.9 +/-    0.59      14.9 +/-    0.59  0.060 / 0.090
G24     253.6          38.5               12.8 +/-    0.82      19.1 +/-    0.82  0.040 / 0.050