PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-00:57:20
G02     202.8          36.9               14.2 +/-    1.11      21.7 +/-    1.11  0.220 / 0.360
G06     160.0          69.5               12.2 +/-    0.59      12.9 +/-    0.59  0.110 / 0.370
G12     307.8          15.1                6.5 +/-    3.34      16.1 +/-    3.34  0.040 / 0.060
G17     32.8           51.9                7.7 +/-    0.70       9.5 +/-    0.70  0.030 / 0.060
G19     1.6            65.1                9.4 +/-    0.91      10.2 +/-    0.91  0.080 / 0.160
G24     297.6          38.1                9.8 +/-    0.86      14.7 +/-    0.86  0.080 / 0.140
G28     103.4          30.3               11.3 +/-    0.68      19.6 +/-    0.68  0.070 / 0.090