PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-01:58:10
G02     66.6           26.7                8.6 +/-    1.74      16.2 +/-    1.74  0.080 / 0.140
G05     49.3           52.2               10.2 +/-    0.44      12.5 +/-    0.44  0.080 / 0.120
G12     182.6          23.4               12.7 +/-    1.20      25.7 +/-    1.20  0.450 / 0.330
G13     121.5          20.8               14.1 +/-    2.07      30.5 +/-    2.07  0.170 / 0.310
G15     159.5          18.7               14.7 +/-    1.05      33.5 +/-    1.05  0.030 / 0.080
G20     222.3          17.4               14.9 +/-    1.59      34.9 +/-    1.59  0.030 / 0.040
G21     277.9          21.9               12.6 +/-    1.82      26.5 +/-    1.82  0.100 / 0.340
G25     227.0          45.6               13.2 +/-    2.06      17.6 +/-    2.06  0.100 / 0.300
G29     333.0          61.9               12.2 +/-    0.46      13.6 +/-    0.46  0.080 / 0.060