PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-12:27:40
G03     235.8          68.0                6.7 +/-    1.15       7.2 +/-    1.15  0.110 / 0.260
G09     303.5          18.3                5.8 +/-    2.80      13.3 +/-    2.80  0.090 / 0.220
G14     98.3           18.2                6.0 +/-    2.00      13.7 +/-    2.00  0.050 / 0.050
G16     122.7          59.4                8.4 +/-    0.57       9.6 +/-    0.57  0.050 / 0.050
G22     190.5          52.9                6.9 +/-    0.67       8.4 +/-    0.67  0.050 / 0.050
G23     322.5          52.4                5.6 +/-    0.44       6.9 +/-    0.44  0.030 / 0.050
G26     66.8           50.1                6.0 +/-    0.69       7.5 +/-    0.69  0.040 / 0.040
G31     52.9           17.6                5.8 +/-    3.86      13.6 +/-    3.86  0.030 / 0.040