PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/29-08:27:50
G07     354.8          64.1                4.1 +/-    0.92       4.5 +/-    0.92  0.050 / 0.090
G08     78.0           51.1                3.7 +/-    0.69       4.6 +/-    0.69  0.050 / 0.080
G09     180.1          60.7                6.7 +/-    0.95       7.5 +/-    0.95  0.070 / 0.060
G11     137.1          19.6                5.6 +/-    1.20      12.4 +/-    1.20  0.060 / 0.050
G23     158.9          32.6                5.6 +/-    1.17       9.2 +/-    1.17  0.030 / 0.040
G27     45.9           24.4                2.5 +/-    1.84       4.9 +/-    1.84  0.040 / 0.040
G28     247.0          38.1                6.7 +/-    1.30      10.1 +/-    1.30  0.040 / 0.040
G30     309.8          41.3                3.7 +/-    0.97       5.3 +/-    0.97  0.030 / 0.050