PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-06:27:50
G03     227.2          63.8                2.5 +/-    0.71       2.8 +/-    0.71  0.040 / 0.080
G07     252.8          11.9                2.8 +/-    2.39       7.5 +/-    2.39  0.050 / 0.070
G09     308.5          26.6                0.7 +/-    0.89       1.4 +/-    0.89  0.110 / 0.430
G14     105.2          10.3                1.4 +/-    2.95       3.8 +/-    2.95  0.160 / 0.460
G16     103.8          62.6                4.0 +/-    0.85       4.4 +/-    0.85  0.130 / 0.580
G22     193.0          48.8                3.5 +/-    2.11       4.4 +/-    2.11  0.130 / 0.500
G23     324.1          54.1                3.0 +/-    0.93       3.6 +/-    0.93  0.030 / 0.040
G26     57.5           45.4                2.5 +/-    0.67       3.3 +/-    0.67  0.040 / 0.040
G31     56.8           12.3                0.5 +/-    0.95       1.3 +/-    0.95  0.030 / 0.050