PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-20:43:00
G01     48.5           24.3               11.3 +/-    0.71      22.5 +/-    0.71  0.110 / 0.320
G06     176.8          27.8               14.8 +/-    1.25      27.1 +/-    1.25  0.120 / 0.280
G07     147.0          11.0               15.5 +/-    4.29      42.5 +/-    4.29  0.060 / 0.110
G11     44.5           14.2                9.8 +/-    1.77      24.9 +/-    1.77  0.060 / 0.140
G13     248.6          29.2               13.4 +/-    1.02      23.9 +/-    1.02  0.110 / 0.370
G15     282.1          15.3               10.8 +/-    1.92      26.6 +/-    1.92  0.090 / 0.280
G17     307.6          77.4               13.6 +/-    0.92      13.9 +/-    0.92  0.040 / 0.060
G19     249.4          60.2               14.6 +/-    0.57      16.5 +/-    0.57  0.040 / 0.070
G28     56.0           51.9               12.6 +/-    0.58      15.5 +/-    0.58  0.120 / 0.220
G30     150.4          38.3               14.9 +/-    1.15      22.2 +/-    1.15  0.190 / 0.240