PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-12:28:10
G01     66.2           32.2                3.2 +/-    0.88       5.4 +/-    0.88  0.050 / 0.040
G07     139.5          27.2                4.7 +/-    0.95       8.7 +/-    0.95  0.030 / 0.040
G11     50.3           26.6                2.2 +/-    1.56       4.1 +/-    1.56  0.060 / 0.130
G13     269.0          37.1                6.2 +/-    1.26       9.4 +/-    1.26  0.050 / 0.120
G15     302.7          14.0                1.4 +/-    2.85       3.5 +/-    2.85  0.070 / 0.080
G17     244.1          74.7                5.9 +/-    0.38       6.1 +/-    0.38  0.060 / 0.080
G18     45.5           15.6                3.1 +/-    1.65       7.6 +/-    1.65  0.120 / 0.460
G19     226.8          41.7                7.0 +/-    1.48       9.9 +/-    1.48  0.110 / 0.410
G28     25.8           58.4                3.9 +/-    0.63       4.5 +/-    0.63  0.080 / 0.120
G30     139.6          60.1                6.3 +/-    0.56       7.2 +/-    0.56  0.090 / 0.130