PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-14:28:00
G03     315.8          47.3                7.7 +/-    0.84      10.0 +/-    0.84  0.040 / 0.080
G11     239.5          12.7                8.2 +/-    1.46      21.6 +/-    1.46  0.040 / 0.070
G14     57.7           43.4                8.5 +/-    0.94      11.7 +/-    0.94  0.080 / 0.320
G18     222.0          28.0               12.0 +/-    2.79      21.9 +/-    2.79  0.080 / 0.300
G22     301.8          70.2                9.1 +/-    0.64       9.6 +/-    0.64  0.040 / 0.040
G25     40.5           10.8                7.2 +/-    3.76      19.7 +/-    3.76  0.040 / 0.040
G26     134.5          38.4               12.5 +/-    1.11      18.6 +/-    1.11  0.080 / 0.310
G31     41.2           56.8                8.4 +/-    0.56       9.8 +/-    0.56  0.150 / 0.320
G32     77.9           21.8                7.0 +/-    1.07      14.9 +/-    1.07  0.060 / 0.070